CN103562484A - Offshore top tensioned riser buoyancy can system and methods of field development - Google Patents
Offshore top tensioned riser buoyancy can system and methods of field development Download PDFInfo
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- CN103562484A CN103562484A CN201280017514.7A CN201280017514A CN103562484A CN 103562484 A CN103562484 A CN 103562484A CN 201280017514 A CN201280017514 A CN 201280017514A CN 103562484 A CN103562484 A CN 103562484A
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- naval vessel
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/002—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables specially adapted for underwater drilling
- E21B19/004—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables specially adapted for underwater drilling supporting a riser from a drilling or production platform
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/01—Risers
- E21B17/012—Risers with buoyancy elements
Abstract
A method for developing an offshore field comprises (a) coupling a plurality of top-tensioned risers to a first vessel at a first location. In addition, the method comprises (b) decoupling the first vessel from the plurality of top-tensioned risers after (a). Further, the method comprises (c) coupling a second vessel to the plurality of top-tensioned risers after (b) at the first location.
Description
The cross reference of related application
The application requires the U.S. Provisional Patent Application sequence number 61/472 that the title of submission on April 7th, 2011 is " Offshore Top Tensioned Riser Buoyancy Can System and Methods of Field Development ", 754 rights and interests, its disclosure is incorporated to its integral body by reference at this.
Technical field
The present invention relates generally to offshore drilling and production system and method.More specifically, the present invention relates to utilize the top-tensioned risers buoyancy can system exploitation offshore oil of marine free-standing and the system and method for gas field.
Background technology
Conventionally use marine riser (Marine riser) at sea, for example, to provide pipeline between naval vessel at sea (, offshore boring island, floating barge and/or produce oil ship, etc.) and sea bed.For example, use marine drilling standpipe, with at various offshore drilling operating period guiding drill string and carry fluid, and ocean produce oil standpipe sets up a kind of flow path, and the hydrocarbon that submarine well is produced flows to the place, naval vessel being positioned on sea.
Due to the weight of marine riser, so the vertical power of necessary specified quantitative to keep standpipe upright, and prevents that it from falling into seabed 20.In addition, conventionally vertical marine riser is crossed and opened, surpass their weight, the standpipe deflection and the stress that with limit exposure, in dynamic sea environment, cause.Therefore, conventionally the standpipe of this vertical layout and tensioning is called to " top-tensioned risers ".
Near Chu Huo sea, sea, erect riser is attached to marine naval vessel.Because naval vessel is subject to the undulatory motion that wave causes, so standpipe is attached to naval vessel the undulatory motion on naval vessel is not passed to the mode of standpipe.Two kinds of traditional riser tensioners are hydraulic actuator and buoyancy can.For hydraulic pressure riser tensioner, hydraulic actuator is attached between naval vessel and the top of standpipe.Fluctuating by actuator stroke compensation naval vessel, meanwhile, by ACTIVE CONTROL hydraulic pressure, remains on substantially invariable level by the tensioning of standpipe.On the other hand, buoyancy can stretcher is the passive device that is attached to riser top.By buoyancy, provide standpipe tensioning, meanwhile, by allowing buoyancy can to slide up and down with respect to main naval vessel in socket type guide, compensation naval vessel rises and falls.Traditionally, hydraulic tensioner and buoyancy can are applied to single standpipe.In the time will supporting a plurality of standpipe, by independent stretcher each standpipe of tensioning individually.
Conventionally, the upper end of top-tensioned risers and associated buoyancy can is for example arranged in, in the periphery of associated surface vessel (, semisubmersible platform, Shi Paer platform, tension leg platform (TLP) etc.).For example, if the title of submitting on October 13rd, 2008 be shown in the U.S. Patent Application Publication No.2009/0095485 of " Tube Buoyancy Can System " and description, the top of buoyancy can vertically upward extends to the midship on marine naval vessel conventionally, and the disclosure of this application is incorporated to its integral body by reference at this.This arrangement constraints the flexibility on naval vessel waterborne because naval vessel can not depart from and away from buoyancy can and standpipe, because they are through naval vessel extension itself.Therefore, this traditional arrangement has proposed restriction to the method for exploitation offshore oil and gas field.Especially, make the conventional procedure of field produces comprise following many order definition steps: the geological prospecting in (1) oil field; (2) the intra-field oil well of assessment probing; (3) formulate oilfield exploitation plan; (4) executive plan; (5) oil field operation.
The geological prospecting in oil field comprises various preliminary geological surveys and sparse 2D seismic work, is then 3D seismic exploration.If prospect appears to have hope, just drill exploratory well.During this process, by geological data, produce various reservoir models, then by this model of information updating that well result is checked.Once assess reservoir, just formulated the plan of oilfield exploitation.This plan generally includes following definite: (a) by number and the position of the well of probing; (b) type of required surface facility; (c) type of riser systems; (d) by the output measure for drilling well and field produces (for example, pipeline, oil tanker, etc.).These plans, may imperfect or coarse reservoir information all based on obtainable.Once formulate, just carry out the plan of exploitation, it comprises buying, structure and the installation of oil field operation equipment needed thereby, infrastructure and system.
At oil field run duration, intra-field condition may change, or may be not and the strict conformance of assessment and programming phase prediction.Owing to being exclusively used in infrastructure, equipment and the system in this oil field, be all for operation under anticipated conditions set designs and builds, so any variation of these conditions all may cause the operational efficiency of equipment lower than optimum efficiency.This loss in efficiency causes the level of production lower, brings significantly sacrificing therefore to the operator in oil field.
In order to address these problems, planned replaceable method, thereby by avoiding mode recover petroleum and the gas field of huge capital cost, this huge capital cost association produces infrastructure, equipment and system layout the place of given oil well or a plurality of oil wells no longer efficiently.At title, be in the U.S. Patent No. 8,122,965 of " Methods for Development of an Offshore Oil and Gas Field ", to disclose the example of this replaceable method, its disclosure is incorporated to its integral body by reference at this.Particularly, U.S. Patent No. 8,122,965 disclose guide's offshore drilling and the production naval vessel that uses probing and produce testing well, then plan initial production program.In other words, after initial production, plan the initial production program of offshore oilfield; Use actual production data to develop this plan.Thereby, can, according to the development of the actual production assessment based on oil well, select more suitable secondary production naval vessel.Once select, secondary production naval vessel just replaces guide to drill and production naval vessel, thereby makes oil field long-term production.Thereby, oil well from guide, drilled and production naval vessel " biography " to secondary production naval vessel.
By single naval vessel, drill with the usual method that produces well and realize together with vertical tensioned riser system with water surface BOP.Yet, for being attached to surface vessel and being disposed in the top-tensioned risers buoyancy can system in surface vessel circumference, even if be not actual impossible, also may be difficult to oil well to pass to secondary production naval vessel, this is because needs are removed and to oil well recompletion.Therefore, have in the art a kind of like this demand, it shifts top-tensioned risers between different surface vessels, to promote the exploitation of offshore oilfield.
Summary of the invention
In one embodiment, by a kind of method of exploiting offshore oilfield, solved these and other demand of this area.In an embodiment, the method comprises: (a). at primary importance place, a plurality of top-tensioned columns are attached to the first naval vessel.In addition, the method comprises: (b). at (a) afterwards, make the first naval vessel depart from and connect from the plurality of top-tensioned column.In addition, the method comprises: (c). at (b) afterwards, at second place place, the second naval vessel is attached to the plurality of top-tensioned column.
In another embodiment, these and other demands of this area by a kind of system, have been solved.In an embodiment, this system comprises the marine naval vessel of relocatable, and it comprises: hull; The topside being supported by hull (topside); The compartment of arranging with periphery along marine naval vessel.In addition, this system comprises the buoyancy can system being arranged in compartment.This buoyancy can system supports a plurality of top-tensioned columns.In addition, this system also comprises system of connections, and it is attached to buoyancy can system by naval vessel releasedly.
In another embodiment, solved these and other demands of this area by a kind of following method, the method for shifting a plurality of top-tensioned columns between the first marine naval vessel and the second marine naval vessel.In an embodiment, the method comprises that (a) supports a plurality of top-tensioned columns by buoyancy can system.In addition, the method comprises that (b) is received into buoyancy can system and top-tensioned column in the compartment of arranging along the periphery on the first marine naval vessel.In addition, the method comprises that (c) withdraws from buoyancy can system and top-tensioned column from compartment.The method also further comprises (d) at (c) afterwards, and buoyancy can system and top-tensioned column are received in the compartment of arranging along the periphery on the second marine naval vessel.
Embodiment as herein described comprises for solving the combination of feature and advantage of the various shortcomings of associated specific existing apparatus, system and method.Feature of the present invention and technological merit have been summarized quite widely above, to can understand better detail specifications of the present invention below.Once read below detail specifications and with reference to accompanying drawing, those skilled in the art will be easy to understand above-mentioned various characteristics and other features.It will be understood by those skilled in the art that and can be easy to, as improve or design the basis of other structures in order to carry out the identical object of the present invention, utilize disclosed concept and specific embodiment.Those skilled in the art also should understand, this equivalent constructions does not depart from the spirit and scope of the present invention that propose in accessory claim.
Accompanying drawing explanation
In order to describe the disclosed embodiments in detail, referring now to accompanying drawing, wherein:
Fig. 1 is according to principle as herein described, is attached to releasedly the schematic side elevation of the buoyancy can system embodiment of relocatable offshore structure;
Fig. 2 is the schematic top view of buoyancy can system and the offshore structure of Fig. 1;
Fig. 3 is the schematic side elevation of the buoyancy can system of Fig. 1;
Fig. 4 is the phantom drawing of the buoyancy can system of Fig. 1;
Fig. 5 is the schematic top view of the buoyancy can system of Fig. 1;
Fig. 6 is the schematic top view of one of them supporting member of the offshore structure of Fig. 1;
Fig. 7 is the end-view of one of them horizontal buffer of Fig. 6;
Fig. 8 is the lateral view of one of them vertical snubber of Fig. 6;
Fig. 9 is the phantom drawing of the system of connections of Fig. 1;
Figure 10-16th, the buoyancy can system of pictorial image 1 is transferred to the order schematic top view of secondary relocatable offshore structure from the offshore structure of Fig. 1;
Figure 17 is the schematic side elevation of buoyancy can system that is attached to releasedly Fig. 3 of Shi Paer platform;
Figure 18 is the schematic top view of buoyancy can system and the Shi Paer platform of Figure 17;
Figure 19 is the schematic side elevation of buoyancy can system that is attached to releasedly Fig. 3 of semisubmersible platform; And
Figure 20 is the schematic top view of buoyancy can system and the semisubmersible platform of Figure 19.
The specific embodiment
Discussion below relates to various illustrative embodiment.Yet, it will be understood by those skilled in the art that example disclosed herein has extensive use, and the discussion meaning of any embodiment is only all the illustration of this embodiment, and is not intended to imply that the disclosure (comprising claim) is limited by this embodiment.
Run through below manual and claim, particular term all relates to specific characteristic or parts.It will be understood by those skilled in the art that different personnel can call identical feature or parts by different titles.Presents is not intended to distinguish between non-functional different parts or feature in title difference.Accompanying drawing needn't be drawn in proportion.May be to exaggerate ratio, or with schematic form a little, specific features and assembly is herein shown, and may, for clear and simple and clear, some details of traditional element be shown.
Below discuss and claim in, with open mode use term " comprising ... " " comprising ... ", thereby should be interpreted as the meaning be " including, but are not limited to ... "Similarly, term " connection " is had a mind to mean indirectly or is directly connected.Thereby if first device is attached to the second device, this connection may be passed through directly to connect, or by the indirect connection through other devices, parts and connection.In addition, it is to be parallel to central axis (for example, the central axis of main body or port) that term used herein " axially " and " axially " roughly look like, and term " radially " and " radially " roughly look like and are perpendicular to central axis.For example, axial distance relates to along or is parallel to the distance that central axis is measured, and the radial distance meaning is perpendicular to the distance that vertical axis is measured.
With reference now to Fig. 1 and 2,, the embodiment of the buoyancy can system 100 of arranging for tensioning erect riser 180 is shown, it is attached to guide's probing and production naval vessel 200 releasedly.In this embodiment, naval vessel 200 is the U.S. Patent application No.13/288 that the title of submission on November 3rd, 2011 is " Offshore Tower for Drilling and/or Production ", relocatable tower described in 426, its disclosure is incorporated to its integral body by reference at this.More specifically, naval vessel 200 comprises buoyancy force adjustable hull 210, and it is supported on sea more than 10 by deck or topside 220.
Still, with reference to Fig. 1 and 2, naval vessel 200 comprises the compartment 230 of essentially rectangular, and it holds buoyancy can system 100 releasedly.Compartment 230 along naval vessel 200 periphery arrange, and limited by following parts, that is: a pair of rigidity level supporting member 231 stretching out with cantilevered fashion from hull 210 and the rigidity level supporting member 232 that extends between the inner of member 231.In addition, slidably drilling cramp 221 is attached to topside 220 movably.As known in the art, slidably drilling cramp (for example, drilling cramp 221) is to run through the mobile drilling cramp of topside (for example, topside 220), thus supported weight, and/or in the diverse location probing with respect to topside.In this embodiment, drilling cramp 221 can be shown in broken lines at primary importance 221a and second place 221b() between move, primary importance 221a is roughly on topside 220 center, and second place 221b stretches out in compartment 230 with cantilevered fashion from the periphery of topside 220.Thereby when buoyancy can system 100 is disposed in compartment 230, drilling cramp 221 is arranged on the buoyancy can system 100 in second place 221b.
As best illustrating in Fig. 1 and 2, compare with the upwardly extending traditional buoyancy can of midship by associated offshore platform and associated top-tensioned risers, in this embodiment, buoyancy can system 100 is arranged in naval vessel 200 laterally in adjacent compartment 230.Thereby as will be described in more detail, guide's probing and production naval vessel 200 can depart from, be transported to diverse location with system 100, and secondary production naval vessel can be transported to system 100 places, and connect with it, to continue to produce by standpipe 180.
With reference now to Fig. 3-5,, after being illustrated in that naval vessel 200 has departed from and removing from this, buoyancy can system 100 is freely erected in open water.Buoyancy can system 100 supports one or more top-tensioned risers 180, its to extra large downward-extension to seabed 20.Haply, standpipe 180 may be drilling at the sea and production riser.The buoyancy that system 100 provides is enough to support completely the every standpipe 180 connecting with it, even as shown in Figure 3, is also like this when system 100 is not attached to any other offshore structure or naval vessel.The net buoyancy that the tensile loads that buoyancy can system 100 imposes on standpipe 180 equals system 100 (, the gross buoyancy of system 100 deducts the weight of system 100), as mentioned below, optionally regulate this net buoyancy, to guarantee that the every standpipe 110 that is attached to system 100 is all tensioned to expected degree.
Still, with reference to figure 3-5, buoyancy can system 100 comprises many vertical orientations that are arranged in essentially rectangular framework 120, the buoyancy can 110 of elongation.Buoyancy can 110 each other and with framework 120 rigid connection so that buoyancy can 110 and framework 120 for example, move in response to external force (, wind, wave etc.) together as a unit.In other words, not relative to each other translation or rotatablely move of buoyancy can 110 and framework 120.As best shown in Figure 5, in this embodiment, buoyancy can 110 is coupled to each other by a plurality of rigid beams 150 and connects with framework 120.
Refer again to Fig. 3-5, the upper end of standpipe 180 is disposed in the void space 130 forming between buoyancy can 110 and framework 120.In addition, the upper end of standpipe 180 is rigid connection each other, and with framework 120 and buoyancy can 110 rigid connection.As a result, the upper end of standpipe 180, buoyancy can 110 and framework 120 in response to external force as single integrated moving.In other words, not relative to each other translation or rotatably motion of the upper end of standpipe 180, buoyancy can 110 and framework 120.As best shown in Figure 5, in this embodiment, the upper end of standpipe 180 is coupled to each other by many rigid beams 151, and is connected to framework 120 and buoyancy can 110.Although in this embodiment, standpipe 180 is disposed in the void space 130 between buoyancy can 110, and in other embodiments, one or more standpipes (for example, standpipe 180) for example, coaxially extend through corresponding buoyancy can (, buoyancy can 110).
Refer again to Fig. 3-5, haply, each buoyancy can 110 can comprise any buoyancy can known in the art.In this embodiment, the shape of each buoyancy can 110 is tubulose, and it has the upper end 110a of sealing and unlimited lower end 110b.Conventionally, each upper end 110a base closed, but comprise port, optionally this port of opening and closing, to regulate the amount of the water ballast of corresponding buoyancy can 110, therefore regulates buoyancy.Each lower end 110b is completely unlimited, to play the seawater of ballast effect, flows freely into and flows out each buoyancy can 110.Preferably, the inside of each buoyancy can 110 is without all such structures, and it may fully suppress seawater flowing freely by lower end 110b.By changing the relative volume of the extra large water and air in buoyancy can 110, regulate the buoyancy of each buoyancy can 110.Especially, in order to improve the seawater volume (and reducing the volume of air in buoyancy can 110) in buoyancy can 110, reduce thus its buoyancy, opening in the upper end 110a of unlatching buoyancy can 110, to allow air by opening effusion buoyancy can 110, and seawater enters buoyancy can 110 by unlimited lower end 110b; And increase the air capacity (and reducing the seawater volume in buoyancy can 110) in buoyancy can 110, improve thus its buoyancy, opening in the upper end 110a of closed and sealed buoyancy can 110, to prevent air effusion buoyancy can 110, and gas-pressurized such as air is pumped into buoyancy can 110, so that the seawater of desired amount shifts out unlimited lower end 110b.The example that discloses the buoyancy can of moving with which in the U.S. Patent Application Publication No.2009/0095485 that the title of submitting on October 13rd, 2008 is " Tube Buoyancy Can System ", its disclosure is incorporated to its integral body by reference at this.
With reference now to Fig. 4,, in this embodiment, buoyancy can system 100 also plays support and is attached to standpipe 180 and receives from standpipe 180 the production manifold 140 of producing fluids, and by many outflow tubes 141, production fluid is supplied to production naval vessel (for example, naval vessel 200).In this embodiment, outflow tube 141 comprises high-pressure spray pipe 141a known in the art, middle baric flow pipe 141b, low pressure outflow tube 141c and test stream pipe 141d.At the production period of relatively high pressure fluid, during normally producing early stage (that is, the early part of reservoir Production Life), use high-pressure spray pipe 141a, thereby make to produce fluid, flow into production naval vessel (for example, naval vessel 200); At middle hydraulic fluid production period, during the interstage (that is, the mid portion of reservoir Production Life) of normally producing, baric flow pipe 141b in use, flows into production naval vessel (for example, naval vessel 200) thereby make to produce fluid; During relatively low pressure fluid production, during the later stage (that is, the later stage part of reservoir Production Life) of normally producing, use low-pressure stream pipe 141c, thereby make to produce fluid, flow into production naval vessel (for example, naval vessel 200); And use test stream pipe 141d, with during any production phase, makes to produce and an any standpipe 180 isolation.Although in this embodiment, manifold 140 is mounted to buoyancy can system 100, in other embodiments, manifold (for example, manifold 140) can be mounted to production naval vessel (for example, naval vessel 200), flexible stream pipe will for example, be supplied to manifold from the production fluid of standpipe (, standpipe 180).
As mentioned above, buoyancy can system 100 is designed to be attached to releasedly the marine naval vessel (for example, naval vessel 200) of relocatable.When system 100 is attached to marine naval vessel, conventionally allow relatively moving both vertically between system 100 and naval vessel, when especially this naval vessel is for unsteady naval vessel.Yet preferably, the relative transverse movement between system 100 and naval vessel minimizes.In embodiment as herein described, member 231,232 restriction systems 100 by limiting compartment 230 are with respect to naval vessel 200(or other naval vessels) transverse movement.
With reference now to Fig. 2 and 6,, member 231,232 is attached to hull 210.Especially, each supporting member 231 has: the first end 231a that is attached to hull 210; The second end 231b away from hull 210; The first axial direction part or the 231c of portion that from end 231a, extend; With the second axial direction part or the 231d of portion that extend to First 231c from end 231b.As best illustrating in Fig. 2 and 6, second 231d is outwards angled with respect to First 231c, limits thus pars infundibularis, and its function is roughly between First 231c, to guide buoyancy can system 100 to enter compartment 230.The circumference that member 232 is parallel to hull 210 between the First 231c of member 231 extends.Especially, member 232 is directed perpendicular to First 231c, the shape of giving thus compartment 230 its essentially rectangulars.
As best illustrating in Fig. 6-8, the fender assembly 235 that is mounted to the inner side of each member 231,232 provides compliant interface between supporting member 231,232 and buoyancy can system 100.Each fender assembly 235 comprises a plurality of horizontal fender devices or snubber 236 and a plurality of vertical fender device or snubber 237, its each be attached to associated supporting member 231,232.Snubber 236,237 is designed to: along with buoyancy can system 100 moves into and shift out compartment 230 between supporting member 231,232, and snubber 236,237 slip joint and buffering buoyancy can system 100.Preferably, snubber 236,237 is made by flexible elastic material, and more preferably, it is attached to supporting member 231 by flexible elastic material.For example, in this embodiment, each snubber 236,237 comprises elastomeric material (for example, rubber), and for example, is attached to its corresponding supporting member 231 by elastomeric material (, rubber).Preferably, in the face of compartment 230 and the surface, inside that is arranged in each snubber 236,237 of buoyancy can system 100 wherein comprise low friction material, such as ultra-high molecular weight polyethylene (UHMW), to allow buoyancy can system 100 slip joint snubbers 236,237.
With reference now to Fig. 2 and 9,, naval vessel 200 comprises system of connections 240, and it is attached to buoyancy can system 100 releasedly by naval vessel 200.In this embodiment, system of connections 240 comprises a plurality of laterally spaced tension assemblies 241, and it is connected to buoyancy can system 100, and operation together, so that buoyancy can system 100 is drawn in to compartment 230, and discharges buoyancy can system 100 from compartment 230.As best illustrating in Fig. 9, each tension assembly 241 comprises: the capstan winch 242 that is mounted to naval vessel 200 in top view between supporting member 231; Rope or cable 243; With pulley 244.Rope 243 is wound around capstan winch 242, around pulley 244, extends, and has the far-end 243a of the framework 120 that is attached to releasedly buoyancy can system 100.Capstan winch 242 is anchored to hull 210, and controls tensioning or slack in rope 243.By being attached to the rope 243 of buoyancy can system 100, capstan winch 242 applies tension force to rope 243, to pull naval vessel 200 towards buoyancy can system 100, so that naval vessel 200 can be received in system 100 in compartment 230, and reduce the tension force of rope 243 and/or apply lax to rope 243, naval vessel 200 can be removed from buoyancy can system 100, allow thus system 100 to leave compartment 230.
With reference now to Figure 10-16,, the embodiment of a kind of following method is shown, it is for shifting or be passed to secondary production naval vessel 300 by buoyancy can system 100 and the standpipe 180 that connects with it from guide's probing and production naval vessel 200.Except naval vessel 300 special designs pass through standpipe 180 actual productions after being adapted at by naval vessel 200 probings and initial production for the production of operation and through customization, naval vessel 300 is all identical with above-mentioned naval vessel 200.Thereby naval vessel 300 comprises that each as described above: hull 210; Topside 220; Slidably drilling cramp 221; The compartment 230 being limited by supporting member 231,232; With system of connections 240.In Figure 10, buoyancy can system 100 is shown and by system of connections 240, is attached to naval vessel 200, and be disposed in compartment 230; In Figure 11-13, buoyancy can system 100 is shown and is leaving compartment 230, and departing from naval vessel 200; In Figure 14, buoyancy can system 100 is shown from naval vessel 200 departs from, and before being attached to naval vessel 300, freely erects; In Figure 15 and 16, buoyancy can system 100 is shown and is attached to naval vessel 300, and move in the compartment 230 on naval vessel 300.When system 100 is attached to naval vessel 200, can pass through naval vessel 200, through standpipe 180, carry out probing or production operation, and when system 100 is attached to naval vessel 300, can pass through naval vessel 300, through standpipe 180, carry out production operation.When buoyancy can system 100 is not attached to arbitrary naval vessel 200,300, and when " isolating ", just by 140 pairs of standpipe 180 closing wells of manifold, and do not carry out probing or production operation.
First with reference to Figure 10, buoyancy can system 100 and the standpipe 180 connecting with it are disposed in the compartment 230 on naval vessel 200, and are attached to naval vessel 200 by system of connections 240.The transverse movement of supporting member 231,232 and fender assembly 60 restriction buoyancy can systems 100, and the interval between system of connections 240 restriction naval vessels 200 and buoyancy can system 100.Especially, capstan winch 242 comprises auto-tensioning system, it makes capstan winch 242 optionally automatically regulate tensioning and lax, with along with naval vessel 200 and/or buoyancy can system 100 at environmental load (for example, wind, wave, ocean current, etc.) lower motion, keep the interval between buoyancy can system 100 and naval vessel 200.Conventionally allow the relative vertical motion between naval vessel 200 and system 100.
With reference now to Figure 11-13,, in order to discharge buoyancy can system 100, by 140 pairs of standpipe 180 closing wells of manifold, and outflow tube 141 departs from naval vessel 200.Then, along with naval vessel 200 lentamente from buoyancy can system 100(for example, pass through towboat) remove, by capstan winch 242, to rope 243, provide lax lentamente, allow thus system 100 to leave compartment 230.When naval vessel 200 in the safe distance place from buoyancy can system 100 (, so that in the time of the risk that does not exist naval vessel 200 to collide buoyancy can system 100 due to environmental load), rope 243 just departs from buoyancy can system 100, and naval vessel 200 can be moved to another probing and/or production operation position.
With reference now to Figure 14-16,, after departing from buoyancy can system 100 on naval vessel 200, naval vessel 300 moves to the appropriate location of connection and receiving system 100.Especially, naval vessel 300 moves towards buoyancy can system 100, and its intermediate chamber 230 is roughly faced system 100 and alignd with system 100.On naval vessel, 300 still in the safe distance place from buoyancy can system 100 (, so that in the time of the risk that does not exist naval vessel 300 to collide buoyancy can system 100 due to environmental load), rope 243 is connected to buoyancy can system 100, and controllably to rope 243, apply tension force by capstan winch 242, to pull lentamente naval vessel 300 towards buoyancy can system 100, thus system 100 is moved in compartment 230.Then, outflow tube 141 is connected to naval vessel 300, and opens the valve on manifold 140, with from standpipe 180 to naval vessel 300 produce oils.Should understand, standpipe 180 is attached to seabed 20, thereby buoyancy can system 100 and standpipe 180 occur in specific offshore location (that is, during transfer, buoyancy can system 100 and standpipe 180 do not move) from the transfer on 200Zhi naval vessel, naval vessel 300 and locate.
As mentioned above, naval vessel the 200, the 300th, relocatable tower.Yet, as herein described, for transmit buoyancy can system and associated top-tensioned risers system and method can with can the using together with location offshore structure or naval vessel of any type known in the art.For example, in Figure 17 and 18, buoyancy can system 100 and associated standpipe 180 are shown and are attached to releasedly the Shi Paer platform 400 that floats, it comprises deck as above or topside 220 and the cylindrical adjustable buoyancy hull 410 that topside 220 is supported on to more than 10 elongation in sea.Anchor line 350 is attached to seabed 20 by Shi Paer platform 400, so that during probing and/or production operation, keeps platform 400 in basic permanent position.Shi Paer platform 400 can disconnect with anchor line 350, or can be from seabed 20 removes anchor line 350, so that platform 400 is repositioned to different offshore location.Slidably drilling cramp 221 as above is attached to topside 220 movably.In addition, platform 400 comprises each as described above, the compartment 230 being limited by supporting member 231,232 and system of connections 240.Platform 400 is to be attached to releasedly buoyancy can system 100 and associated top-tensioned risers 180 with identical mode mentioned above.
As another example, in Figure 19 and 20, buoyancy can system 100 is shown and is attached to releasedly floating semi-submersible type platform 500, it comprises deck or topside 220 as described above, and the cylindrical adjustable buoyancy hull 510 that topside 220 is supported on to more than 10 elongation in sea.Anchor line 350 is attached to seabed 20 by semisubmersible platform 500, so that during probing and/or production operation, keeps semisubmersible platform 500 in basic permanent position.Semisubmersible platform 500 can disconnect with anchor line 350, or can be from seabed 20 removes anchor line 350, so that semisubmersible platform 500 is repositioned to different offshore location.Slidably drilling cramp 221 as above is attached to topside 220 movably.In addition, semisubmersible platform 500 comprises each as described above, the compartment 230 being limited by supporting member 231,232 and system of connections 240.Semisubmersible platform 500 is to be attached to releasedly buoyancy can system 100 and associated top-tensioned risers 180 with identical mode mentioned above.
Embodiment as herein described relate to for by top-tensioned risers from first or the marine naval vessel of guide be transferred to the system and method on the second marine naval vessel.These embodiment are particularly suitable for using together with " dry type tree " well." dry type tree " is usually directed to a kind of well, more than wherein " production tree " valve member is disposed in waterline.Especially, embodiment disclosed herein makes may be by being attached to buoyancy can system 100 by naval vessel releasedly, and recompletion ground does not pass to secondary production naval vessel by dry type tree well from guide's probing and production naval vessel.Exploiting by this way oil field allows (for example to exploit more quickly oil field, owing to not needing recompletion, simplified the exchange on naval vessel), and be the U.S. Patent No. 8 of " Methods for Development of an Offshore Oil and Gas Field " by the title of submitting on May 29th, 2007,122, the method of describing in 965, known and understood before producing, save in advance a large amount of expensive capital costs, its disclosure is incorporated to its integral body by reference at this.
Although illustrated and described preferred embodiment, in the situation that do not depart from scope or instruction herein, those skilled in the art can make its modification.Embodiment as herein described is only for illustrative and nonrestrictive.System as herein described, equipment and process may have many variants and modification, and it is all in scope of the present invention.For example, the relative size of various parts, the material of making various parts and other parameters can change.Therefore, protection domain is not limited to embodiment as herein described, but only by claim below, is limited, and its scope should comprise all equivalents of claim purport.Unless otherwise expressly stated, otherwise may be with the step in any order manner of execution claim.Identifier narration in claim to a method before step, such as (a) and (b), (c), or (1), (2), (3) are not intended to and do not specify special sequence of steps, but for simplify these steps after quote.
Claims (according to the modification of the 19th of treaty)
1. for exploiting a method for offshore oilfield, comprising:
(a). at primary importance place, many top-tensioned risers are attached to the first naval vessel;
(b). at (a) afterwards, make described the first naval vessel depart from and connect from described many top-tensioned risers;
(c). described many top-tensioned risers are received in the compartment in the periphery that is arranged in the second naval vessel; With
(d). at (b) afterwards, at described primary importance place, make the second naval vessel be attached to described many top-tensioned risers.
2. method according to claim 1, wherein (b) also comprises described the first naval vessel moved away from described primary importance;
Wherein (c) comprises described the second naval vessel moved towards described primary importance.
3. method according to claim 1, also comprises:
At (a) afterwards and at (b) before, utilize described the first naval vessel, by a lower oil well in top-tensioned risers probing sea in described top-tensioned risers; With
At (d) afterwards, utilize described the second naval vessel, by a top-tensioned risers in described top-tensioned risers, oil well under described sea is produced.
4. method according to claim 3, also comprises:
Utilize described the first naval vessel to drill under described sea after oil well, utilizing described the first naval vessel, by the top-tensioned risers oil well initial production from described sea in described top-tensioned risers.
5. method according to claim 4, also comprises:
After initial production, at least production of a bite well described in assessment;
Assessment based on oil well under described sea is produced, and selects described the second naval vessel; With
Described the second naval vessel is disposed to described primary importance, to replace described the first naval vessel.
6. method according to claim 1, also comprises:
At (a), (b), (c) with (d), utilize buoyancy can system to support described top-tensioned risers.
7. method according to claim 6, wherein (a) comprising:
(a1). the first cable extending from described the first naval vessel is attached to described buoyancy can system; With
(a2). to described the first cable, apply tension force, thereby described buoyancy can system is moved in the compartment in the periphery that is arranged in described the first naval vessel.
8. method according to claim 7, wherein (b) comprising:
(b1). reduce the tension force on described the first cable;
(b2). described the first naval vessel is pulled open from described buoyancy can system, to remove described buoyancy can system from described compartment; With
(b3). make described the first cable depart from and connect from described buoyancy can system.
9. method according to claim 7, wherein (d) comprising:
(d1). the second cable extending from described the second naval vessel is attached to described buoyancy can system; With
(d2). to described the second cable, apply tension force, thereby described buoyancy can system is moved in the compartment in the periphery that is arranged in described the second naval vessel.
10. a system, comprising:
Relocatable marine naval vessel, described naval vessel comprises hull, the topside being supported by described hull and the compartment of arranging along the periphery on described marine naval vessel;
Be arranged in the buoyancy can system in described compartment, wherein said buoyancy can system supports many top-tensioned risers; With
Described naval vessel is attached to releasedly to the system of connections of described buoyancy can system.
11. systems according to claim 10, wherein said naval vessel is adjustable buoyancy tower, adjustable buoyancy Shi Paer platform or adjustable buoyancy semisubmersible platform.
12. systems according to claim 10, wherein said compartment is limited from the outward extending supporting member in described naval vessel by a pair of, and wherein each supporting member comprises the fender device for engaging slidably with described buoyancy can system.
13. systems according to claim 12, wherein each fender device comprises a plurality of flexibilities, snubber with resilience, described snubber is configured to engage with described buoyancy can system.
14. systems according to claim 13, wherein each snubber is made by elastomeric material, and interior surface thereof comprises ultra-high molecular weight polyethylene.
15. systems according to claim 10, wherein said system of connections comprises:
Be mounted to the capstan winch on described naval vessel; With
From described capstan winch, extend to the cable of described buoyancy can system;
Wherein said capstan winch is configured to regulate the tensioning in described cable and relaxes.
16. systems according to claim 10, wherein said buoyancy can system comprises framework and the buoyancy can that is attached to a plurality of adjustable buoyancies of described framework,
Wherein said top-tensioned risers is attached to described framework, and is positioned between described buoyancy can.
17. systems according to claim 16, wherein produce manifold and are disposed on described buoyancy can system.
18. 1 kinds for shifting the method for many top-tensioned risers between the first marine naval vessel and the second marine naval vessel, and described method comprises:
(a). utilize buoyancy can system to support many top-tensioned risers;
(b). described buoyancy can system and described top-tensioned system are received in the compartment of arranging along the periphery on described the first marine naval vessel;
(c). from described compartment, withdraw from described buoyancy can system and described top-tensioned risers; With
(d). at (c) afterwards, described buoyancy can system and described top-tensioned system are received in the compartment of arranging along the periphery on described the second marine naval vessel.
19. methods according to claim 18, wherein (b) comprising:
(b1). the first cable extending from described the first naval vessel is attached to described buoyancy can system; With
(b2). to described the first cable, apply tension force, thereby described buoyancy can system is moved in the compartment in the periphery that is arranged in described the first naval vessel.
20. methods according to claim 19, wherein (c) comprising:
(c1). reduce the tension force on described the first cable;
(c2). described the first naval vessel is pulled open from described buoyancy can system, to remove described buoyancy can system from described compartment; With
(c3). make described the first cable depart from and connect from described buoyancy can system.
21. methods according to claim 20, wherein (d) comprising:
(d1). the second cable extending from described the second naval vessel is attached to described buoyancy can system; With
(d2). to described the second cable, apply tension force, thereby described buoyancy can system is moved in the compartment in the periphery that is arranged in described the second naval vessel.
22. methods according to claim 21, the tension force in wherein said the first cable is by the first winch control that is mounted to described the first naval vessel, and the tension force in described the second cable is by the second winch control that is mounted to described the second naval vessel.
23. methods according to claim 18, wherein each compartment is by limiting from the outward extending pair of supporting members in described naval vessel, and each supporting member comprises the fender device for being combined slidably with described buoyancy can system.
24. methods according to claim 23, wherein each fender device comprises snubber a plurality of flexibilities, with resilience, described snubber is configured to engage with described buoyancy can system.
Claims (24)
1. for exploiting a method for offshore oilfield, comprising:
(a). at primary importance place, many top-tensioned risers are attached to the first naval vessel;
(b). at (a) afterwards, make described the first naval vessel depart from and connect from described many top-tensioned risers; With
(c). at (b) afterwards, at described primary importance place, make the second naval vessel be attached to described many top-tensioned risers.
2. method according to claim 1, wherein (b) also comprises described the first naval vessel moved away from described primary importance;
Wherein (c) comprises described the second naval vessel moved towards described primary importance.
3. method according to claim 1, also comprises:
At (a) afterwards and at (b) before, utilize described the first naval vessel, by a lower oil well in top-tensioned risers probing sea in described top-tensioned risers; With
At (c) afterwards, utilize described the second naval vessel, by a top-tensioned risers in described top-tensioned risers, oil well under described sea is produced.
4. method according to claim 3, also comprises:
Utilize described the first naval vessel to drill under described sea after oil well, utilizing described the first naval vessel, by the top-tensioned risers oil well initial production from described sea in described top-tensioned risers.
5. method according to claim 4, also comprises:
After initial production, at least production of a bite well described in assessment;
Assessment based on oil well under described sea is produced, and selects described the second naval vessel; With
Described the second naval vessel is disposed to described primary importance, to replace described the first naval vessel.
6. method according to claim 1, also comprises:
At (a), (b) with (c), what support described top-tensioned risers is buoyancy can system.
7. method according to claim 6, wherein (a) comprising:
(a1). the first cable extending from described the first naval vessel is attached to described buoyancy can system; With
(a2). to described the first cable, apply tension force, thereby described buoyancy can system is moved in the compartment in the periphery that is arranged in described the first naval vessel.
8. method according to claim 7, wherein (b) comprising:
(10). reduce the tension force on described the first cable;
(b2). described the first naval vessel is pulled open from described buoyancy can system, to remove described buoyancy can system from described compartment; With
(b3). make described the first cable depart from and connect from described buoyancy can system.
9. method according to claim 7, wherein (c) comprising:
(18). the second cable extending from described the second naval vessel is attached to described buoyancy can system; With
(c2). to described the second cable, apply tension force, thereby described buoyancy can system is moved in the compartment in the periphery that is arranged in described the second naval vessel.
10. a system, comprising:
Relocatable marine naval vessel, described naval vessel comprises hull, the topside being supported by described hull and the compartment of arranging along the periphery on described marine naval vessel;
Be arranged in the buoyancy can system in described compartment, wherein said buoyancy can system supports many top-tensioned risers; With
Described naval vessel is attached to releasedly to the system of connections of described buoyancy can system.
11. systems according to claim 10, wherein said naval vessel is adjustable buoyancy tower, adjustable buoyancy Shi Paer platform or adjustable buoyancy semisubmersible platform.
12. systems according to claim 10, wherein said compartment is limited from the outward extending supporting member in described naval vessel by a pair of, and wherein each supporting member comprises the fender device for engaging slidably with described buoyancy can system.
13. systems according to claim 12, wherein each fender device comprises a plurality of flexibilities, snubber with resilience, described snubber is configured to engage with described buoyancy can system.
14. systems according to claim 13, wherein each snubber is made by elastomeric material, and interior surface thereof comprises ultra-high molecular weight polyethylene.
15. systems according to claim 10, wherein said system of connections comprises:
Be mounted to the capstan winch on described naval vessel; With
From described capstan winch, extend to the cable of described buoyancy can system;
Wherein said capstan winch is configured to regulate the tensioning in described cable and relaxes.
16. systems according to claim 10, wherein said buoyancy can system comprises framework and the buoyancy can that is attached to a plurality of adjustable buoyancies of described framework,
Wherein said top-tensioned risers is attached to described framework, and is positioned between described buoyancy can.
17. systems according to claim 16, wherein produce manifold and are disposed on described buoyancy can system.
18. 1 kinds for shifting the method for many top-tensioned risers between the first marine naval vessel and the second marine naval vessel, and described method comprises:
(a). utilize buoyancy can system to support many top-tensioned risers;
(b). described buoyancy can system and described top-tensioned system are received in the compartment of arranging along the periphery on described the first marine naval vessel;
(c). from described compartment, withdraw from described buoyancy can system and described top-tensioned risers; With
(d). at (c) afterwards, described buoyancy can system and described top-tensioned system are received in the compartment of arranging along the periphery on described the second marine naval vessel.
19. methods according to claim 18, wherein (b) comprising:
(10). the first cable extending from described the first naval vessel is attached to described buoyancy can system; With
(b2). to described the first cable, apply tension force, thereby described buoyancy can system is moved in the compartment in the periphery that is arranged in described the first naval vessel.
20. methods according to claim 19, wherein (c) comprising:
(18). reduce the tension force on described the first cable;
(c2). described the first naval vessel is pulled open from described buoyancy can system, to remove described buoyancy can system from described compartment; With
(c3). make described the first cable depart from and connect from described buoyancy can system.
21. methods according to claim 20, wherein (d) comprising:
(18). the second cable extending from described the second naval vessel is attached to described buoyancy can system; With
(c2). to described the second cable, apply tension force, thereby described buoyancy can system is moved in the compartment in the periphery that is arranged in described the second naval vessel.
22. methods according to claim 21, the tension force in wherein said the first cable is by the first winch control that is mounted to described the first naval vessel, and the tension force in described the second cable is by the second winch control that is mounted to described the second naval vessel.
23. methods according to claim 18, wherein each compartment is by limiting from the outward extending pair of supporting members in described naval vessel, and each supporting member comprises the fender device for being combined slidably with described buoyancy can system.
24. systems according to claim 23, wherein each fender device comprises snubber a plurality of flexibilities, with resilience, described snubber is configured to engage with described buoyancy can system.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
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| US201161472754P | 2011-04-07 | 2011-04-07 | |
| US61/472,754 | 2011-04-07 | ||
| PCT/US2012/032403 WO2012138912A2 (en) | 2011-04-07 | 2012-04-05 | Offshore top tensioned riser buoyancy can system and methods of field development |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103562484A true CN103562484A (en) | 2014-02-05 |
| CN103562484B CN103562484B (en) | 2016-05-25 |
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|---|---|---|---|
| CN201280017514.7A Active CN103562484B (en) | 2011-04-07 | 2012-04-05 | Marine top-tensioned risers buoyancy can system and oilfield exploitation method |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20120255736A1 (en) |
| CN (1) | CN103562484B (en) |
| BR (1) | BR112013025746B1 (en) |
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| MY (1) | MY184287A (en) |
| WO (1) | WO2012138912A2 (en) |
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|---|---|---|---|---|
| CN110057667A (en) * | 2018-01-19 | 2019-07-26 | 丰田自动车株式会社 | Tension applying apparatus |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| AT511850B1 (en) * | 2011-07-13 | 2013-03-15 | Univ Wien Tech | FLOATING PLATFORM |
| CN111488139B (en) * | 2019-01-25 | 2023-01-31 | 成都鼎桥通信技术有限公司 | Cluster service secondary development method based on private network terminal |
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| US5657823A (en) * | 1995-11-13 | 1997-08-19 | Kogure; Eiji | Near surface disconnect riser |
| US20080135233A1 (en) * | 2006-12-08 | 2008-06-12 | Horton Technologies, Llc | Methods for Development of an Offshore Oil and Gas Field |
| US20080277123A1 (en) * | 2004-10-01 | 2008-11-13 | Stanwell Consulting Limited | Offshore Vessel Mooring and Riser Inboarding System |
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| FR2768457B1 (en) * | 1997-09-12 | 2000-05-05 | Stolt Comex Seaway | DEVICE FOR UNDERWATER TRANSPORT OF PETROLEUM PRODUCTS WITH A COLUMN |
| FR2858648B1 (en) * | 2003-08-08 | 2006-11-10 | Saipem Sa | FOND-SURFACE BONDING DEVICE COMPRISING A SEALED FLEXIBLE JOINT BETWEEN A RISER AND A FLOAT |
| US8402983B2 (en) * | 2005-02-17 | 2013-03-26 | Single Bouy Moorings, Inc. | Gas distribution system |
| BRPI0621320B1 (en) * | 2006-02-10 | 2017-05-09 | Anadarko Petroleum Corp | method and system for restricting the release of a subsurface ascension column system |
| US20090126617A1 (en) * | 2007-11-19 | 2009-05-21 | Millheim Keith K | Docking and Drilling Stations for Running Self-Standing Risers and Conducting Drilling, Production and Storage Operations |
| US20090129867A1 (en) * | 2007-11-20 | 2009-05-21 | Millheim Keith K | Self-Standing Riser and Buoyancy Device Deployment and Positioning System |
| WO2009148943A1 (en) * | 2008-06-03 | 2009-12-10 | Shell Oil Company | Offshore drilling and production systems and methods |
-
2012
- 2012-04-05 CN CN201280017514.7A patent/CN103562484B/en active Active
- 2012-04-05 MX MX2013011557A patent/MX344068B/en active IP Right Grant
- 2012-04-05 US US13/440,747 patent/US20120255736A1/en not_active Abandoned
- 2012-04-05 BR BR112013025746-6A patent/BR112013025746B1/en active IP Right Grant
- 2012-04-05 WO PCT/US2012/032403 patent/WO2012138912A2/en active Application Filing
- 2012-04-05 MY MYPI2013003651A patent/MY184287A/en unknown
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5342148A (en) * | 1990-12-10 | 1994-08-30 | Shell Oil Company | Method and system for developing offshore hydrocarbon reserves |
| US5657823A (en) * | 1995-11-13 | 1997-08-19 | Kogure; Eiji | Near surface disconnect riser |
| US20080277123A1 (en) * | 2004-10-01 | 2008-11-13 | Stanwell Consulting Limited | Offshore Vessel Mooring and Riser Inboarding System |
| US20080135233A1 (en) * | 2006-12-08 | 2008-06-12 | Horton Technologies, Llc | Methods for Development of an Offshore Oil and Gas Field |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110057667A (en) * | 2018-01-19 | 2019-07-26 | 丰田自动车株式会社 | Tension applying apparatus |
| CN110057667B (en) * | 2018-01-19 | 2021-12-21 | 丰田自动车株式会社 | Tension applying device |
Also Published As
| Publication number | Publication date |
|---|---|
| MX2013011557A (en) | 2015-02-05 |
| WO2012138912A2 (en) | 2012-10-11 |
| MY184287A (en) | 2021-03-30 |
| BR112013025746A2 (en) | 2016-12-13 |
| MX344068B (en) | 2016-12-02 |
| CN103562484B (en) | 2016-05-25 |
| WO2012138912A4 (en) | 2013-04-18 |
| BR112013025746B1 (en) | 2021-03-23 |
| WO2012138912A3 (en) | 2013-02-28 |
| US20120255736A1 (en) | 2012-10-11 |
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